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<p>Allylsilanes are primarily used in allylation reactions that form new C–C bonds. Although they can also serve as silylating reagents to generate Si–O bonds, such transformations have generally required Brønsted or Lewis acid catalysis. Herein, we describe an acid-free method to access silyl ethers, siloxanes, and borasiloxanes via silylation or borylation. Hexafluoroisopropanol enables this reactivity, allowing a wide range of alcohols and silanols to undergo efficient conversion under mild conditions.</p><p></p>

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Unlocking Lewis acid–free metalation of O–nucleophiles in HFIP

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年6月2日

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  • Kacper Łyczek,
  • Martyna Markwitz,
  • Maciej Janicki,
  • Krzysztof Kuciński

摘要

Allylsilanes are primarily used in allylation reactions that form new C–C bonds. Although they can also serve as silylating reagents to generate Si–O bonds, such transformations have generally required Brønsted or Lewis acid catalysis. Herein, we describe an acid-free method to access silyl ethers, siloxanes, and borasiloxanes via silylation or borylation. Hexafluoroisopropanol enables this reactivity, allowing a wide range of alcohols and silanols to undergo efficient conversion under mild conditions.